Cleaner Chemical Engineering最新文献

{"title":"Phenomenological modeling of polyols, citric acid and bio-oil concurrent production by Yarrowia lipolytica from glycerol","authors":"Ana Luiza B.M.A. Campos ,&nbsp;Felipe V. do Nascimento ,&nbsp;Argimiro R. Secchi ,&nbsp;Maria Alice Z. Coelho","doi":"10.1016/j.clce.2023.100100","DOIUrl":"https://doi.org/10.1016/j.clce.2023.100100","url":null,"abstract":"<div><p>Biochemical routes have shown to be an interesting alternative for the reuse of glycerol, largely generated as a co-product in biodiesel production reaction. Previous works from the research group have demonstrated that glycerol can be efficiently assimilated by <em>Yarrowia lipolytica</em> to produce erythritol, mannitol, citric acid and bio-oil. To better understand the metabolic pathways involved, this work proposes a mathematical model to describe the observed phenomenon. This is the first computational work to model polyol's production and to address the simultaneous formation of four products by <em>Yarrowia lipolytica</em>. Particle Swarm Optimization and Interior Point Optimization were employed together to find the global optima. The developed model proved to be significantly promising and capable of satisfactorily predict the system's behavior in more than one experimental condition. Not only products’ concurrent formation was accurately described, but also polyols’ modeling was successfully performed, reaching R² values greater than 0.93.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100100"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49713025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Production of hydrochars from Pinus caribaea for biosorption of methylene blue and tartrazine yellow dyes","authors":"João Gabriel da Silva Andrade ,&nbsp;Carlos Eduardo Porto ,&nbsp;Wardleison Martins Moreira ,&nbsp;Vagner Roberto Batistela ,&nbsp;Mara Heloísa Neves Olsen Scaliante","doi":"10.1016/j.clce.2022.100092","DOIUrl":"https://doi.org/10.1016/j.clce.2022.100092","url":null,"abstract":"<div><p>Wood is one of the most abundant renewable resources in the world. However, large volumes of waste are generated in the losses and cuts of wood saws, being an important environmental problem. This work aims to evaluate the production of hydrochar from wood residues of Pinus caribaea combined with acid-base treatment for application as dyes Methylene Blue (MB) and Tartrazine Yellow (TAR). Hydrocarbonization was carried out at 200 or 240 ..C for 12 or 24 h, in acidic or basic medium. The pHZPC of the hydrocarbons obtained in acidic medium was between 2.66-4.12 and 4.46-5.76 for those processed in basic medium. The pseudo-secondorder model (PSO) better fitted the adsorption of MB and TAR on Pinus in natura and on hydrochar. In addition, the Sips model was considered the most suitable for MB (qmax= 132.1 mg g-1 for PIN and 149.0 mg g-1 for PIN-200-24-B) and Toth for TAR (qmax= 18.14 mg g-1 for PIN and 23.01 mg g-1 for PIN-200-24-B adsorption isotherms). Therefore, the hydrocarbonization of waste generated from the wood industry in acidic and basic environments has great potential for the treatment of materials such as biosorbents, thus promoting greater sustainability in this sector.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100092"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49706798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and analysis of reactive distillation for the production of isopropyl myristate","authors":"S. Purna Pushkala ,&nbsp;Rames C. Panda","doi":"10.1016/j.clce.2022.100090","DOIUrl":"https://doi.org/10.1016/j.clce.2022.100090","url":null,"abstract":"<div><p>This work explains the production of isopropyl myristate (IPM), an ester formed from the esterification reaction of myristic acid and isopropyl alcohol in a reactive-distillation column. The design of the column has been done to achieve a dual process objective of achieving product purity of 99% and reactant conversion (99%) to produce 1000 kg/hr IPM at 30°C and about 1 bar pressure conditions existing within the column. The reboiler duty comes to be 190 kW against the condenser duty of 160 kW when an entrainer, cyclohexane at 1975 kg/hr is used, which can be reduced by employing two columns. The nonlinear quaternary system is solved using NRTL thermodynamic package, and the reactive distillation column is designed. The IMC-PID-based temperature controller has been designed for a closed-loop structure to achieve safe operation and desired dynamic control behavior and simulated by using MATLAB. The column has been stable under both steady-state and dynamic conditions by stabilizing the non-linear performance of the column by the controllers. The process integration of the reactor and separator into one column has minimized a process plant's operating and investment cost.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100090"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49707014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pressurized upflow reactor system for the bioconversion of coal to methane: Investigation of the coal/sand interface effect","authors":"Margaux Meslé ,&nbsp;Logan H. Hodgskiss ,&nbsp;Elliott Barnhart ,&nbsp;Laura Dobeck ,&nbsp;Joachim Eldring ,&nbsp;Randy Hiebert ,&nbsp;Alfred Cunningham ,&nbsp;Adrienne Phillips ,&nbsp;Robin Gerlach ,&nbsp;Matthew W. Fields","doi":"10.1016/j.clce.2023.100099","DOIUrl":"https://doi.org/10.1016/j.clce.2023.100099","url":null,"abstract":"<div><p>Microbial generation of coal bed methane (CBM) represents a significant source of natural gas on Earth. While biostimulation has been demonstrated in batch cultures, environmental parameters such as overburden pressure and formation water flow need to be tested at the laboratory scale to understand <em>in situ</em> potential. We designed and constructed a high-pressure (HP) flow-through reactor system that simulates <em>in situ</em> conditions of underground coal seams. Two stainless-steel columns contained coal from the Powder River Basin (PRB), USA, or a coal/sand mixture to represent the interface of coal seams with sandstone layers, which are hypothesized to exhibit higher methanogenesis rates <em>in situ</em>. The system was filled with CBM formation water, inoculated with a methanogenic enrichment from PRB coal beds, and stimulated with algal biomass as a nutrient. The reactors were incubated under pressure (5.4 atm) and flow of CBM water (0.01 mL/min), and control batch cultures were incubated at ambient pressure and without flow (± amendment). Dissolved and headspace methane concentrations were analyzed over time by gas chromatography for 75 days. The pressurized reactors exhibited longer latency periods than ambient pressure controls, but methane production did not reach a plateau phase, which might reflect the impact of scale on the inoculum. The coal/sand reactor exhibited higher methane production than the coal-only reactor, a pattern also observed in the corresponding controls, suggesting an interface effect on methanogenesis. This study indicates that the HP flow test system we designed is well suited for the study of methanogenesis and provides a successful demonstration of CBM generation from the PRB in field-relevant laboratory conditions as a precursor to meso‑scale demonstrations.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100099"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49713011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the core-shell ratio in nanostructured CuS@In2S3 photocatalyst for efficient dye degradation","authors":"Mengxin Liu,&nbsp;Alex Sheardy,&nbsp;Gayani Pathiraja,&nbsp;Frank Tukur,&nbsp;Anitha Jayapalan,&nbsp;Jianjun Wei","doi":"10.1016/j.clce.2023.100093","DOIUrl":"https://doi.org/10.1016/j.clce.2023.100093","url":null,"abstract":"<div><p>This work reports on a microwave-assisted solvothermal synthesis of CuS@In₂S₃ core-shell hybridized nanoparticles (Hy-NPs) at different weight ratios (wt%) of CuS to tune the heterojunction optoelectronic properties and evaluate the application for photocatalytic degradation of organic dyes. The photodegradation performance in terms of the efficiency and reaction kinetics shows that the 10 wt% CuS Hy-NPs presents the highest photoactivity in the degradation of two dye species, methylene blue (MB) and methyl orange (MO) when compared to 5 wt% CuS, 15% CuS Hy-NPs samples as well as the pristine CuS or In₂S₃ NPs. The structural and morphological studies combining the optical bandgap analysis suggest that the CuS amount used in the synthesis step plays an important role to forming the efficient heterojunction interfaces for charge carrier separation to inhibit the recombination of excited electron and hole pairs and the resultant apparent optical bandgap of the Hy-NPs. The 10 wt% CuS@In₂S₃ core-shell Hy-NPs demonstrate a lower optical band for a wide range visible light absorption and higher photocatalytic activity than that of the CuS NPs, In₂S₃ NPs, and the 5 wt% CuS, or 15 wt% CuS Hy-NPs. The findings in this work may offer an alternative simple and effective approach to designing and synthesizing metal chalcogenide heterojunctions for improving photocatalytic activity.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100093"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49706955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integration of energy systems, circular economy and efficiency measures","authors":"Tine Seljak ,&nbsp;Jakov Baleta ,&nbsp;Hrvoje Mikulčić","doi":"10.1016/j.clce.2022.100088","DOIUrl":"https://doi.org/10.1016/j.clce.2022.100088","url":null,"abstract":"<div><p>With realization that world's resources are limited, a number of initiatives in all global regions emerged to pursue a common goal of sustainable management of energy and material loops. The intensively researched topics are traditionally gathered under the roof of Sustainable Development of Energy, Water and Environmental Systems conferences (SDEWES), which in its 16^th edition saw a highly focused and impacting research contributions, tackling the cross-sectoral development and introduction of novel technologies and processes, all devoted to implementation and examination of possible solutions to contribute to Sustainable Development Goals (SDGs). The present paper is gathering and structuring these contributions, enriched with the outcomes of previous SDEWES conferences to enlighten the advances made in the fields of energy harvesting, circular economy and efficient energy use to put into context the role of cleaner chemical engineering. By this, it provides a basis and a guidance for future research on the axis of material-resource-energy nexus which is in the paper identified as an extensively interlinked research area, difficult to be tackled individually and still requiring an important effort to collectively address the cross-sectoral dimension of the challenge.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100088"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49730212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of combustion characteristics of high ash Indian coal, petroleum coke and their blends for cement industry using TGA","authors":"Pritam Kumar,&nbsp;Barun Kumar Nandi","doi":"10.1016/j.clce.2022.100091","DOIUrl":"https://doi.org/10.1016/j.clce.2022.100091","url":null,"abstract":"<div><p>This work investigates the combustion analysis of coal, petroleum coke and their blends. Coal and petroleum coke were characterized by proximate analysis, ultimate analysis, gross calorific value determination and ash analysis. Combustion performance of parent fuels and their blends were evaluated by thermogravimetric analysis followed by the analysis of different characteristics parameters, namely ignition temperature, peak temperature, burnout temperature and combustion efficiency. Results signify that petroleum coke has poor combustion characteristics compared to coal. After the rise in petroleum coke from 10 to 50 mass %, ignition temperature reduced from 413 to 385 °C, while insignificant variations occurred in peak temperature and burnout temperature. Such observations show natural reduction in ignition characteristics without significant modification in coal's burning profile. Combustion efficiency at 450 °C reduced from 46.18% to 34.77% as petroleum coke increased from 10 to 50 mass %, signifying decline in the combustion properties of coal. Kinetic analysis shows that petroleum coke has the maximum activation energy (182.11 kJ/mol) than coal (84.84 kJ/mol). Analysis of changes in enthalpy, Gibbs free energy and entropy inferred that individual combustion of both coal and petroleum coke is difficult, while blends have improved combustion characteristics than petroleum coke.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100091"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49706536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermal liquefaction processes for plastics recycling: A review","authors":"Georgina C. Laredo ,&nbsp;Joel Reza ,&nbsp;Edith Meneses Ruiz","doi":"10.1016/j.clce.2023.100094","DOIUrl":"https://doi.org/10.1016/j.clce.2023.100094","url":null,"abstract":"<div><p>If our expectations are to have a future with the resources provided by the earth, the recycling of plastics has become one of the most important topics that, as humans, we must deal with. Among the technologies developed for treating this issue is the hydrothermal liquefaction (HTL) method. In this review, subcritical and supercritical hydrothermal processes are presented. Experimental methods and product yields are disclosed and discussed. Subcritical conditions have previously been used to depolymerize synthetic polymers containing heteroatoms, such as bisphenol-A-based epoxy resin (Epoxy), polyamide 6 (PA6), polyamide 6/6 (PA66), polyethylene terephthalate (PET), polycarbonate (PC), and polyurethane (PU). This type of polymer can be broken down using this low-temperature, low-pressure method because it has heteroatoms that are easy to break down. To depolymerize polyolefins like polyethylene (PE) and polypropylene (PP), derivatives and mixtures, formed by long hydrocarbon chains, supercritical water conditions (&gt; 374 °C; &gt; 23 MPa) seem to be required.  These requirements make the procedure quite expensive. The review showed that a new method that uses pressures between 2.5 and 30 MPa, temperatures above 400 °C, and residence times of 20 to 60 min, named low-pressure hydrothermal liquefaction (LP-HTL), can be used to handle this type of polyolefin hydrocarbon. This review describes the conditions needed to handle this problematic type of feedstock and, in a certain way, the possible utilization of such technology for treating more complex waste mixtures.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100094"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49706640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum Regarding Previously Published Articles","authors":"","doi":"10.1016/j.clce.2022.100086","DOIUrl":"https://doi.org/10.1016/j.clce.2022.100086","url":null,"abstract":"","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100086"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49713026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid-liquid microwave-assisted extraction of bioactive extract recovery from Hunteria umbellata seeds: Non-mechanistic modelling, bi-objective optimization, HPLC finger printing and scale-up techno-economics with sensitivity analysis","authors":"E. O Oke ,&nbsp;O Adeyi ,&nbsp;B. I Okolo ,&nbsp;J. A Adeyi ,&nbsp;D Nnabodo ,&nbsp;Chiamaka Joan Ude ,&nbsp;O. O Ajala ,&nbsp;S. E Okhale ,&nbsp;Jude A． Okolie ,&nbsp;J. A Otolorin ,&nbsp;B. K Adeoye ,&nbsp;A. S Anyanwu","doi":"10.1016/j.clce.2023.100097","DOIUrl":"https://doi.org/10.1016/j.clce.2023.100097","url":null,"abstract":"<div><p>Previous investigations reported evaluation of biological, therapeutic and pharmacological activities of phenolic bioactive extract from <em>Huntaria Umbellate</em> Seed (HUS). However, process modelling and optimization, upscaling as well as techno-economic evaluation of Microwave-Assisted Extraction (MAE) of HUS are seldom documented in the literature. Therefore, this study presents black-box modelling, optimization and techno-economics of MAE of HUS. Box-Behken Design (BBD) of Response Surface Methodology (RSM) was applied for modelling and optimizing experimental MAE factors: microwave power (520 – 1040 W), extraction time (2- 10 min), solid-liquid ratio (0.4 – 1 g/100 ml); and the responses: Total Phenolic Content (TPC) and Process Yield (PY). Adaptive Neuro-Fuzzy Inference System (ANFIS) codes were programmed in Matlab 2019 for the phenolic extract recovery prediction. Process scale-up simulation and techno-economics were performed in ASPEN Batch Process Developer (ABPD) software. Coefficients of determination (R²) of 0.9349 (BBD-RSM), 0.9959 (ANFIS) and 0.9772 (BBD-RSM), 0.9971 (ANFIS) were obtained for TPC and yield respectively. The optimal yield (24.2625%) and TPC (7.89125 mg GAE/gdw) were obtained at extraction time (2 min) with microwave power (780 W) and solid-liquid ratio (0.4 g/ml). HUS extract HPLC result contains bentulinic acid, chlorogenic acid, caffeic acid, elliagic acid, rutin and Qucertin. Techno-economic results gave batch size, batch time, production rate, total capital investment, annual production cost and payback time of 5 kg, 137 mins, 0.0364 kg/min, USD80398, USD456000 and 2.29 years respectively. Therefore, preliminary bioactive extract production from HUS is techno-economically feasible.</p></div>","PeriodicalId":100251,"journal":{"name":"Cleaner Chemical Engineering","volume":"5 ","pages":"Article 100097"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49706642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}